Ventilation hood



FIG. 1 is a rear perspective view of a ventilation hood, showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The dash-dot-dash broken lines illustrate the bounds of the claim. All other broken lines, illustrate portions of the ventilation hood. None of the broken lines form part of the claimed design. 

CLAIM I claim the ornamental design for a ventilation hood, as shown and described. 